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HAZELWOOD, Mo (KMOV.com) – A custodian at Hazelwood East High School was arrested Thursday after authorities received a tip he had weapons in his car.

In a letter sent to parents, school administrators explained they had placed the custodian on administrative leave pending an investigation, though there was no indication the weapons were intended for use at the school .

The school says it will cooperate fully with the investigaion of St. Louis County Police.